I wasn't happy with how slow it was going with the file, so I broke out the dremmel with the sanding drum. I reshaped the grip and added some figure to the grip cap area which changed the slope of the bottom edge of the butt. The top of the buttstock is very squared off so I rounded it off and I tapered the stock so it is now thinner at the bottom. If you took a cross section view of the buttstock as it comes from the factory it would be shaped like a 2x4, now it has a tear drop shape. One of the biggest helps so far is a sanding sponge. I found them at Wally World and they're made by 3M. It's basically just a foam sponge but the outside is covered with a layer of grit. They really do a good job of following the contours of the wood.